氨基酸载体—tRNA/adaptor
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§1.2 氨基酸载体—tRNA/adaptor

3. Dimensional structure of
tRNA


★tRNA 是实验遗传密码转换为蛋白质的转换器

摆动性(wobble base pair)
★Non-Watson-Crick base pairing
· 反密码子的第1个核苷酸与密码子的第3个核苷酸间不严格遵守常见的碱基配对规律—摆动配对。
· the 5' base on the anticodon, which binds to the 3' base on the mRNA, was not as spatially confined as the other two bases, and could, thus, have non-standard base pairing.
· 摆动性wobble

摆动学说-Wobble hypothesis

·反密码子的第一位核苷酸决定其所识别的氨基酸数目.
Diagram of wobble base pairing 

活化氨基酸 —氨基酰-tRNA (Aminoacyl-tRNA)
★Aminoacyl-tRNA:gly-tRNAgly
★起始aminoacyl-tRNA: (f)met-tRNAi(f)met
★延长aminoacyl-tRNA: ala-tRNAeala

